DE7006387U - SEAL ARRANGEMENT. - Google Patents

Description

SKP KDGEUAGERFABniXEN (HEH Setaielnfurt, IS. February 1970

TAP / StB / ie

Sealing arrangement

The innovation relates to a sealing arrangement between two parts rotating relative to one another, especially for roller bearings, consisting of a holder, an abutment ring and a flat sealing washer made of elastic, oil-resistant and also friction-reducing material glued in between.

In the case of such sealing northings, an edge is usually defined, i.e. the sealing disk is prevented from rotating by suitable means and only the other edge effects the sliding seal in the axial or radial direction.

To meet these requirements, a split resilient ring, for example a snap ring, is to be used as a retaining ring for the sealing washer. In order to achieve a secure attachment here, however, must be best innrbe, on the thickness tolerance of the level Dichtscux. * Sa cbgestionte tolerances between the contact surface of the snap ring and the contact surface of the contact ring are taken into account. The arrangement of an angular ring with vull-walled legs is also known. Such an angular ring, however, is too hard in terms of its suspension and when it is pressed in, particularly in small roller bearings, easily leads to the reformation of the raceway.

The innovation is based on the task of a sealing arrangement create that does not have the aforementioned defects.

This object is achieved in that the retaining ring in cross section Is designed angularly, its radially extending leg is designed closed, while the axially outwardly conical widening legs with resilient tongues of different axial Length is provided.

SKF KUGELLAGERFABRIKEN GMBH Sheet - 2 -

These retaining rings according to the innovation can be made of deep-drawn sheet metal or spring steel are produced and have tongues in alternating succession for radial adhesion by means of a press fit on the almost axially extending sole handle and tongues for positive holding. When installing the retaining ring, the shorter tongues of the axial leg snap into one in the bearing race or an annular groove arranged in the housing and thus secure the sealing arrangement against axial displacement, while the longer Tongues spring radially against the bore of the bearing inner ring or the housing and in particular the retaining ring with the other directional elements prevent it from turning.

The advantages achieved with the innovation are that with the help the longer, narrow tongues a soft, radial spring against the bearing race or the housing is achieved without too strong cause radial compression and thus deformation of the counterpart. The shorter tongues have the advantage that they snap into an annular groove securing against axial displacement of the sealing arrangement exists and these tongues act like barbs.

An embodiment of the ^first innovation is shown in the drawing and will be described below. Show it

Fig. 1 is a section through a sealing arrangement according to the innovation

2 shows a section through a retaining ring in the removed state

3 shows a development of a retaining ring. In all figures, the same reference numbers are used for the same parts.

Figure 1 shows a sealing arrangement, consisting of an attachment ring 1, an axially or radially running sealing washer 2 and a retaining ring

SKP KUGELLAGERFAERIKEN GMBH

Sheet - 3 -

with an angular cross-section. This retaining ring is on the axially extending Vercehen legs with springy tongues of different lengths. The longer tongues' V of the axially directed leg of this Retaining rings 3 spring radially against the bore, e.g. of a bearing outer ring 5, while the shorter tongues 6 fit into one located in the bearing outer ring 5 Ring groove 7 one-off. The axially extending leg of the angular retaining ring 3 is flared outwardly before its installation, two times, the shorter tongues 6 widened somewhat more conically are, as can be seen from FIG. Finally, the alternating sequence of short and long tongues 6 and 4 is shown in FIG.

The sealing arrangement according to the innovation is not only applicable to rolling bearings, but generally applicable for sealing an annular gap, whereby the The sealing washer can run axially or radially. It goes without saying also possible the sealing arrangement on the inside or on to fasten the shaft.

Claims (1)

£ entitlement to protection Sealing arrangement between two relatively rotating parts, in particular for roller bearings, consisting of a retaining ring, a bearing ring, both of which are firmly connected to one of the relatively rotating parts, and a flat sealing washer made of elastic, oil-resistant and friction-reducing material that is clamped between these two rings , characterized in that the retaining ring (3) is angular in cross-section and its radially extending leg is designed to be closed, while the approximately axially directed, outwardly conical leg is divided into resilient tongues (^, S) of different lengths is, the short one. Tongues (6) engage in a groove (7) of the bearing ring or housing (5), while the long tongues (4) come to rest on the bore surface of the bearing ring or housing (5).